I would try using an antenna amplifier, as the inputs of some cards are not very sensitive.
Michael Ellis wrote: > Hi folks. > > I am troubleshooting a noisy picture coming from the upper channels > on my PVR 500. An MPEG2 file which illustrates this is available at > this url: > http://www.ellissoftworks.com/noisy-pvr500.mpg > > This test file was captured by executing the following commands: > $ ivtv-tune -c 62 /dev/video0 > $ cat /dev/video0 > noisy-pvr500.mpg > > At first, I assumed I had a noisy cable configuration. So, I > replaced the cable connecting my PVR500 to the wall, and the problem > persisted. Following that, I connected the cable directly to the > TV's built-in tuner, and I found that the image was fine when > acquiring it via the TV's tuner, but using the same cabling, the > PVR500 delivered the noisy image. > > The first few channels (2-13 or so) are perfect, and channels from > 13-40 or a little noisy. Above that, you get results such as the > example I provided above (that one's channel 62). > > It's worth mentioning that this has not been a problem in the past > (prior to last month, I was using IVTV 0.6.4). So, I reverted to > 0.6.4, but that did not correct the issue either. > > My configuration information appears below. Any suggestions as to > what I might try? Could this be a hardware problem? > > Thanks for your thoughts. > -Mike Ellis > > > > Linux video capture interface: v1.00 > ivtv: ==================== START INIT IVTV ==================== > ivtv: version 0.6.7 (tagged release) loading > ivtv: Linux version: 2.6.16-gentoo-r13 SMP gcc-3.4 > ivtv: In case of problems please include the debug info between > ivtv: the START INIT IVTV and END INIT IVTV lines, along with > ivtv: any module options, when mailing the ivtv-users mailinglist. > ivtv0: Autodetected Hauppauge WinTV PVR-150 card (cx23416 based) > ACPI: PCI Interrupt Link [APC1] enabled at IRQ 16 > GSI 20 sharing vector 0x32 and IRQ 20 > ACPI: PCI Interrupt 0000:05:08.0[A] -> Link [APC1] -> GSI 16 (level, > low) -> IRQ 50 > ivtv0: Unreasonably low latency timer, setting to 64 (was 32) > tveeprom 0-0050: Hauppauge model 23552, rev E587, serial# 8382698 > tveeprom 0-0050: tuner model is Samsung TCPN 2121P30A (idx 87, type 70) > tveeprom 0-0050: TV standards NTSC(M) (eeprom 0x08) > tveeprom 0-0050: second tuner model is Philips TEA5768HL FM Radio > (idx 101, type 62) > tveeprom 0-0050: audio processor is CX25843 (idx 37) > tveeprom 0-0050: decoder processor is CX25843 (idx 30) > tveeprom 0-0050: has radio, has no IR remote > ivtv0: This is the first unit of a PVR500 > tuner 0-0060: TEA5767 detected. > tuner 0-0060: chip found @ 0xc0 (ivtv i2c driver #0) > tuner 0-0060: type set to 62 (Philips TEA5767HN FM Radio) > tuner 0-0061: chip found @ 0xc2 (ivtv i2c driver #0) > cx25840 0-0044: cx25843-23 found @ 0x88 (ivtv i2c driver #0) > cx25840 0-0044: loaded v4l-cx25840.fw firmware (16382 bytes) > wm8775 0-001b: chip found @ 0x36 (ivtv i2c driver #0) > ivtv0: loaded v4l-cx2341x-enc.fw firmware (376836 bytes) > ivtv0: Encoder revision: 0x02060039 > ivtv0: Allocate DMA encoder MPEG stream: 128 x 32768 buffers (4096KB > total) > ivtv0: Allocate DMA encoder YUV stream: 194 x 10800 buffers (2048KB > total) > ivtv0: Allocate DMA encoder VBI stream: 120 x 17472 buffers (2048KB > total) > ivtv0: Allocate DMA encoder PCM audio stream: 455 x 4608 buffers > (2048KB total) > ivtv0: Create encoder radio stream > tuner 0-0061: type set to 70 (Samsung TCPN 2121P30A) > ivtv0: Initialized WinTV PVR 500 (unit #1), card #0 > ivtv: ====================== NEXT CARD ====================== > ivtv1: Autodetected Hauppauge WinTV PVR-150 card (cx23416 based) > ACPI: PCI Interrupt Link [APC2] enabled at IRQ 17 > GSI 21 sharing vector 0x3A and IRQ 21 > ACPI: PCI Interrupt 0000:05:09.0[A] -> Link [APC2] -> GSI 17 (level, > low) -> IRQ 58 > ivtv1: Unreasonably low latency timer, setting to 64 (was 32) > tuner 1-0061: chip found @ 0xc2 (ivtv i2c driver #1) > cx25840 1-0044: cx25843-23 found @ 0x88 (ivtv i2c driver #1) > cx25840 1-0044: loaded v4l-cx25840.fw firmware (16382 bytes) > wm8775 1-001b: chip found @ 0x36 (ivtv i2c driver #1) > tveeprom 1-0050: Hauppauge model 23552, rev E587, serial# 8382698 > tveeprom 1-0050: tuner model is Samsung TCPN 2121P30A (idx 87, type 70) > tveeprom 1-0050: TV standards NTSC(M) (eeprom 0x08) > tveeprom 1-0050: second tuner model is Philips TEA5768HL FM Radio > (idx 101, type 62) > tveeprom 1-0050: audio processor is CX25843 (idx 37) > tveeprom 1-0050: decoder processor is CX25843 (idx 30) > tveeprom 1-0050: has radio, has no IR remote > ivtv1: This is the second unit of a PVR500 > ivtv1: Correcting tveeprom data: no radio present on second unit > ivtv1: loaded v4l-cx2341x-enc.fw firmware (376836 bytes) > ivtv1: Encoder revision: 0x02060039 > ivtv1: Allocate DMA encoder MPEG stream: 128 x 32768 buffers (4096KB > total) > ivtv1: Allocate DMA encoder YUV stream: 194 x 10800 buffers (2048KB > total) > ivtv1: Allocate DMA encoder VBI stream: 120 x 17472 buffers (2048KB > total) > ivtv1: Allocate DMA encoder PCM audio stream: 455 x 4608 buffers > (2048KB total) > tuner 1-0061: type set to 70 (Samsung TCPN 2121P30A) > eth0: no IPv6 routers present > ivtv1: Initialized WinTV PVR 500 (unit #2), card #1 > ivtv: ==================== END INIT IVTV ==================== > > > ========================= > Michael F. Ellis > President > Ellis Softworks Inc. > ---------- > Phone: (941) 713-0361 > Email: [EMAIL PROTECTED] > Web: http://www.ellissoftworks.com > > > > _______________________________________________ > ivtv-users mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-users > _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
